Introduction to Statistics — Unit test Answers

A large city offers many venues for watching a concert. A listing of concert venues for the city includes the following information: the number of seats, the age of the venue, the number of nearby parking spaces, and the location of the venue (inside or outside). What are the individuals in the data set?

A visitor guide for a downtown area lists many restaurants. Which of the following is an example of a quantitative variable the guide could report for each restaurant?

A movie theater offers three types of tickets: child, student, and adult. Ticket sales for two movies are shown in the table. Ticket Type ChildStudentAdultTotalMovie TitleThe Ransom123870100Space Force344256132 Total4680126232If a ticket was sold for Space Force, what is the probability it was a student ticket?

An urban planner collects data on how park trails are used by residents. The planner looks at two trails: one that winds through an urban area and another in a suburban park. The table shows the number of users who walk, jog, or bike the trail. Activity WalkJogBikeTotalType of ParkUrban765823157Suburban1257642243 Total20113465400What proportion of park users jog on the park trails?

The relative frequency table below displays the proportion of colors of cars for sale at a dealership.What proportion of cars are yellow?

A sample of adults was asked to choose their favorite sport to watch from a list of four sports. Age Range 18-3031-5051+TotalSportFootball15191751Baseball7121837Basketball1581134Soccer129627 Total494852149What proportion of those surveyed chose basketball as their favorite sport?

The stemplot below represents the number of bite-size snacks grabbed by 32 students in an activity for a statistics class.

The dotplots below display the scores for two classes on a 30-point statistics quiz. Class A has 26 students and Class B has 25 students.Which statement best compares the variability of the quiz scores for Class A and Class B?

The graph below displays a fire department’s response time, which measures the time from when the alarm is sounded at the firehouse to the time the first fire engine leaves the station.

The bar graph below shows the eye colors of students in a statistics class.

A family visits a car show to research information on vehicles they might consider purchasing. Brochures for each vehicle provide helpful information for the vehicle. Which of the following is an example of a discrete quantitative variable that might be included in the brochure?

In a large city, commuter trains are used to transport people into the downtown area. Trains arrive many times a day to a downtown station. While most are on time, some are late. The table shows on-time data from the past week. Train Status On TimeLateTotalDay of the WeekMonday32840Tuesday241640Wednesday37340Thursday291140Friday302050 Total15258210What percentage of trains were late in this particular week?

Students apply for admission to different academic programs within a college. Because of space, each program can only accept a limited number of students. The table below shows the acceptance data for a selection of majors in the college. Acceptance Status AcceptedRejectedTotalCollege MajorChemistry721890Business6535100Spanish451560 Total18268250What is the probability that a student was accepted, given that the student applied to the business program?

A movie theater offers many movie selections for its customers. The table below shows a summary of five movies currently offered and whether the movie is appropriate for children.What are the individuals in the data set?

An airline uses many different types of airplanes. Information regarding some of the airplanes is given in the table below.Which of the variables is a continuous variable?

A veterinarian is visited by many pets and their owners each day. Before the doctor attends to each pet, an assistant records information including the type, age, weight, and height of each pet. What are the individuals in the data set?